Browse the USPS collection of note cards, greeting cards, thank you cards, and more! Many of our cards and envelopes also include forever stamps.
It was launched on an Atlas V 541. The cost of the launch service plus the cost of the operations to fly the rover to Mars and run it for one Martian year on the surface was about $700M. Written Jun 12, 2015.
It will cost $4.2 billion. Slated to be operational next June, ET Rover will carry enough gas in a single day to heat 30,000 average U.S. homes for an entire year. Itâs more than twice as long as the final leg of the controversial Keystone XL crude oil pipeline.